CN102926829B

CN102926829B - Valve Rocker Organization

Info

Publication number: CN102926829B
Application number: CN201210460249.1A
Authority: CN
Inventors: 余伟; 兰州
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2012-11-15
Filing date: 2012-11-15
Publication date: 2015-08-12
Anticipated expiration: 2032-11-15
Also published as: CN102926829A

Abstract

The present invention relates to engine art, particularly a kind of Valve Rocker Organization.A kind of Valve Rocker Organization; rocking arm is provided with oil duct, and the inner end of described oil duct extends to pitman arm shaft place and is communicated with the oil pocket in it, and the outer end of described oil duct extends on the back face of rocking arm; and communicate with the oil groove that back face is offered, oil groove extends to the two ends of rocking arm along back face.In rocking arm, offer less oil duct, ensure that rocker arm strength; Have employed outside oil groove to contact position fuel feeding, oil groove not easily blocks, and oil pressure impact is less, makes contact position keep sufficient lubrication; Meanwhile, program technique is simple, easy to process.

Description

Valve Rocker Organization

Technical field

The present invention relates to engine art, particularly a kind of Valve Rocker Organization.

Background technique

Rocking arm 1 and the component such as valve stem, push rod contact with each other, and as shown in Figure 1, A is that rocking arm contacts with push rod position, and B is that rocking arm contacts with valve stem position.When engine operation, rocking arm 1 is around pitman arm shaft 2 swing in high frequency, and contact position A, B friction is frequent, except requiring that rocking arm itself possesses except higher-strength, also needing to ensure that contact position A, B have and lubricating more fully.In prior art, be the sufficient lubrication ensureing A position, the scheme of use is drilled with oil duct 4 on rocking arm 1, and in oil pocket 3, lubricant oil has certain oil pressure, understands along oil duct 4, thread pitch to A position fuel feeding, to ensure sufficient lubrication; For ensureing the sufficient lubrication of B position, the scheme of use is on rocking arm 1, be drilled with oil duct 5, oil duct 6, due to oil pressure in oil pocket 3 existence and oil duct 6 aperture is less, make lubricant oil through oil channel 5, eject from oil duct 6, reach B position, to ensure lubrication.There is more problem in present technology: oil duct 6 aperture is less, easily blocks, and oil duct 6 can be made when oil pressure is lower in oil pocket 3 in addition to spray dynamics not, no matter be that blocking or injection dynamics are inadequate, B position all will be caused to can not get sufficient lubrication; Offer comparatively multi-oil-passage in rocking arm 1, not only complex process, also can reduce the intensity of rocking arm 1 simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of Valve Rocker Organization, while guarantee rocker arm strength, make rocking arm and valve stem, push rod contact position obtain sufficient lubrication.

For reaching above effect, the technical solution used in the present invention is: a kind of Valve Rocker Organization; rocking arm is provided with oil duct; the inner end of described oil duct extends to pitman arm shaft place and is communicated with the oil pocket in it; outer end of described oil duct extends on the back face of rocking arm; and communicate with the oil groove that back face is offered, oil groove extends to the two ends of rocking arm along back face.

Compared with prior art, there is following technique effect in the present invention:

In rocking arm, offer less oil duct, ensure that rocker arm strength; Have employed outside oil groove to contact position fuel feeding, oil groove not easily blocks, and oil pressure impact is less, makes contact position keep sufficient lubrication; Meanwhile, program technique is simple, easy to process.

Accompanying drawing explanation

Fig. 1 is the structural representation of prior art;

Fig. 2 is structural representation of the present invention;

Fig. 3 is schematic perspective view of the present invention.

Embodiment

Below in conjunction with Fig. 2, Fig. 3, the present invention is described in further detail:

Consult Fig. 2, a kind of Valve Rocker Organization; rocking arm 10 is provided with oil duct 11; inner end of described oil duct 11 extends to pitman arm shaft 20 place and is communicated with the oil pocket 21 in it; outer end of described oil duct 11 extends on the back face 13 of rocking arm 10; and communicate with the oil groove 12 that back face 13 is offered, oil groove 12 extends to the two ends of rocking arm 10 along back face 13.The shaft core line of oil duct 11 is vertical with pitman arm shaft 20.Herein, the inner end of oil pocket 11 is connected by pitman arm shaft oil duct 22 with oil pocket 21, when the shaft core line of oil duct 11 and pitman arm shaft oil duct 22 is overlapping, is conducive to the flowing of lubricant oil.

Because there are two places at position to be lubricated, respectively: adjustment screw 30 contacts with the ball seat of push rod position 31; Rocking arm 10 contacts with valve stem position 14.When using the present invention program, as long as draw two oil ducts at most, by oil groove, sufficient lubrication is carried out to contact position 31,14, but the scheme of the best as shown in this embodiment, only offer an oil duct 11, as long as ensure that the outer end of oil duct 11 extends to the peak place in the back face 13 of rocking arm 10.

Consult Fig. 2, Fig. 3, oil groove 12 is arranged as better along the center line in rocking arm 10 back face 13, and center line herein refers to: on the axial direction of pitman arm shaft 20, and rocking arm 10 has certain thickness, and the position of its decile thickness is the position of center line.Described oil groove 12 cross section is square or arc simultaneously.One end of rocking arm 10 is provided with and the attachment hole adjusting screw 30 and coordinate, and one end of oil groove 12 extends to this attachment hole, after lubricant oil arrives attachment hole, can flow to position 31 to be lubricated along the gap between this attachment hole and adjustment screw 30.After described oil groove 12 extends to one end that rocking arm 10 is connected with valve stem, continue to carry over rocking arm 10 end sides and arrange downwards, such layout is more conducive to lubricant oil to guide to contact position 14.Oil groove 12 is opened on back face 13, and processing is got up very simple.

Pitman arm shaft 20 itself needs lubrication simultaneously, only has a pitman arm shaft oil duct 22 not to be too desirable, has another pitman arm shaft oil duct 22 ', make pitman arm shaft reach sufficient lubrication on pitman arm shaft 20 with in pitman arm shaft oil duct 22 symmetrical position.

The lubricant oil of certain oil pressure is had in oil pocket 21 in pitman arm shaft 20; flowed out by pitman arm shaft oil duct 22, oil duct 11; outer end due to oil duct 11 is arranged on the peak place in back face 13; under gravity; lubricant oil can flow along oil groove 12 to both sides; reach the position 31,14 needing lubrication respectively, play lubrication protection effect.

Claims

1. a Valve Rocker Organization, it is characterized in that: rocking arm (10) is provided with oil duct (11), the inner end of described oil duct (11) extends to pitman arm shaft (20) place and is communicated with the oil pocket (21) in it, it is upper and communicate with the oil groove (12) that back face (13) are offered that the outer end of described oil duct (11) extends to the back face (13) of rocking arm (10), and oil groove (12) extends to the two ends of rocking arm (10) along back face (13);

Described oil groove (12) continues to carry over rocking arm (10) end sides and arranges downwards after extending to one end that rocking arm (10) is connected with valve stem.

2. Valve Rocker Organization as claimed in claim 1, is characterized in that: the shaft core line of described oil duct (11) is vertical with pitman arm shaft (20).

3. Valve Rocker Organization as claimed in claim 1, is characterized in that: the outer end of described oil duct (11) extends to the peak place in the back face (13) of rocking arm (10).

4. Valve Rocker Organization as claimed in claim 1, is characterized in that: described oil groove (12) is arranged along the center line in the back face (13) of rocking arm (10).

5. Valve Rocker Organization as claimed in claim 1, is characterized in that: described oil groove (12) cross section is square or arc.

6. Valve Rocker Organization as claimed in claim 1, is characterized in that: one end of described rocking arm (10) is provided with and the attachment hole adjusting screw (30) and coordinate, and one end of oil groove (12) extends to this attachment hole.

7. Valve Rocker Organization as claimed in claim 1, it is characterized in that: described pitman arm shaft (20) offers first and second two oil ducts (22,22 '), superposed oil duct (22) is connected with the oil duct (11) on rocking arm (10), the hollow shape tube wall that two oil ducts (22,22 ') run through pitman arm shaft (20) is arranged, the hole core of two oil ducts (22,22 ') overlap and with the shaft core line square crossing of pitman arm shaft (20).